Home / 318,964.20-478,331.10-161,140.20

Finding the Fourth Proportional to 318,964.20, 478,331.10 and 161,140.20

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Solution

The fourth proportional to 318,964.20, 478,331.10 and 161,140.20 is: 241,652.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,964.20 : 478,331.10 = 161,140.20 : x
  2. Step 2: Convert to fraction form
    318,964.20/478,331.10 = 161,140.20/x
  3. Step 3: Cross multiply
    318,964.20x = 478,331.10 × 161,140.20
  4. Step 4: Simplify right side
    318,964.20x = 77,078,369,120.22
  5. Step 5: Solve for x
    x = 77,078,369,120.22/318,964.20
  6. Step 6: Final answer
    x = 241,652.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.